Gallocarboxylic-acid compounds.



' can be obtainedby eithertreating RUDOLPIZLBERENDES, OF ELBERFELD,GERMANYyASSIGNOR '10 SYNTHETIC PATENTS 00., INQ, OF NEW YORK, N. Y., ACORPORATION OF NEW YORK.

1 ,150,654. ?iipecifieation of Lettersratent.

No Drawing.

. To all whom it may concern:

Be'it known thug RUDOLPH BERENB TQ doctor of philosophy, chemist,citizen of th .(zerman'Empii-e, residing at-Elberfeld, Ger- .many,-,hay,e invented new and useful Improveinents in Gallocarboxylic-AcidCompounds,'of"wh1ch the following is a specification; .7 My inventionrelates'to the manufacture their molecule iodin and bismuth. They,

gallocarbo'Xylic acid with bismuthoxyiodid or by treating with hydrogeniodid the basic bismuth salt of gallocarboxylic acid. The new compoundshave proved to be valuable antiseptics and astringents. They aregenerally reddish-brown to gray powders insoluble 1n water, difticultlysoluble in the usual organic parts being by weightz+ solvents andyielding "when treated with f flillfihe followinggallocarboxylic aciddilute hydrochloric acid. In ordertoillustrate thenew process more exainpiesarei 'ven, the

Example 1: 214 parts of gallocarboxylic acid, 700 parts ofbismuth-onyiodid and water are mixed together to a fine pulp. This-pulpis treated during two hours on a boiling water bath until unchangedgallobe present in the mixture.

' alcohol and dried. tained is a red-brown carboxylic acid can no longerbe proved to Subsequently the precipitate is filtered off, washed withwater,

' The product thus 0bpowder, containing about 20 per cent. oi iodin andper cent. of bismuth. It is insoluble in water and ditlicultly ligroin,etc. The gallocarboxylic acid bedilute hydrochloric acid,

Application filed July 17, 1914. sferial No. 851,555.

soluble in ether, benzene, alcohol,

Patented Aug; 17, 1915.

. Example 2: 100 eaiiboxvla is (it bisi powder: together witlhaboutparts of drogen ibditl, heating 'must' be avoided. The product thusobtained is washed with water and dried. It is a grayish-green powder,insoluble imwat-er and organic'solvents such as alcohol, ligroin,ether,"benzene, etc, It is decomposed by dilute hydr0- I-claim:- 1. Thenew compounds being chemically gallocarboxylic acid compounds containingiii their molecule iodin difli'enlty in alcohol, ether, benzene,ligroin; which splits off gallocarboxylic acidupon treatment with dilutehydrochloric acid,.-

containing about 20 per cent. of iodin and,

45 per cent. of bismuth; being a valuable and bismuth being generallyreddish-brown to gray powders compound being chemically parts of thebasic gallo nuthere ground toa fine solvents; yielding gallo-CillbOXYllC acid upon treatment with dilute power insoluble in water andsoluble with antiseptic and astringent; substantially as I described.

In testimony whereof I have hereunto 'set Witnesses:

HELEN Nurnn, ALnnn'r N UFER.

myhand in the presence of two subscribing witnesses.

